<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml" xmlns:v-model="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../../js/vue/vue.js"></script>
</head>
<body>

<!-- 页面模板 -->
<div id="app">
    {{username}}</br>

    v-bind:<input type="text" name="username" v-bind:value="username"><br>
    v-model:<input type="text" name="username" v-model:value="username"><br>

</div>
<script>
    var app = new Vue({
        el:'#app',
        data:{
            username:"你试试"
        }
    })
</script>
</body>
</html>